I would like to be able to convert between Matrix4f and Matrix4d.  I 
didn't see a way to do this so I tried to add it in OSG::Matrix like this:


   template<class ValueTypeR>
    void convertFrom       (const TransformationMatrix<ValueTypeR>& 
mat    );


 template<class ValueTypeT, class ValueTypeR> inline
void TransformationMatrix<ValueTypeT>::convertFrom(
    const TransformationMatrix<ValueTypeR>& mat)
{
    for(UInt32 i = 0; i < 4; i++)
    {
        _matrix[i] = mat._matrix[i];
    }
}

This code did not compile because of problems with the template params.  
Can anyone tell me how to implement or even better yet suggest code that 
would work?

-Allen


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